//alert("第一个");
//console.log("你好");
//console.log("把你送到控制台");
//alert(220*(5+4)/5);
////sdf
//alert(23>23);
//alert(23<23);
//alert("122" + "122");
//alert("holee");
//alert(113 + 113);
//console.log("小明" == "amdia");
//console.log("欢迎;" + "小红");
//alert("200" + "200");
//alert('200 +200 ='+200 + 200);
//alert('200 +230 =' +(200+230));
//


//if(22 > 23){
//    alert("true");
//}
//else {
//    alert("false");
//}
//var num1 = 22;
//var num2 = 33;
//alert(num1 + num2);
//alert(num1 - num2);
//alert(num1 * num2);
//var temp = num1;
//num1 = num2;
//num2 = num1;
//
//console.log(num1);
//console.log(num2);
//if (prompt("请输入你的QQ密码")  =="1111111.."){
//    alert("您好，管理员")
//}else {
//    alert("你好用户")
//}
//
//
// var time =new Date();
//console.log(time);
//console.log(time.getHours());
//var h = time.getHours();
//console.log(h);
//if (h <12){
//    alert("上午好");
//}else {
//    alert("下午好");
//}


//function sum(a,b){
//    var c = a - b;
//    return c;
//}
//alert(sum(20,30));
//alert(sum(10,0.1));
//function num(){
//    alert(123);
//}
//num();
//num();


//function num(a){
//    alert(a);
//}
//num(100);
//num(200);
//function nu(a,b){
//    alert(a + b);
//}
//nu(100,200);
//nu(300,500);


//console.log(document.getElementById("ttt"));
//console.log(document.getElementById("ttt".innerHTML));
//var ttt = document.getElementById("ttt");
//console.log(ttt.innerHTML);
//ttt.innerHTML = "我修改啦";

//var stu ={};
//stu.name = "小红";
//stu.age = 19;
//stu.sex = "女";
//stu.say = function(){
//    return"我叫"+this.name+",今年"+this.age+"岁了。";
//};
//console.log(stu);
//console.log(stu.name);
//console.log(stu.say());

